======================================
| xx__-> [   47.943833] ------------[ cut here ]------------
| [   47.943917] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: unshare/204
| [   47.944008] Modules linked in:
| [   47.944166] Tainted: [W]=WARN
[   47.944224] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.944299] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.944369] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 76 b2 fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 76 b2 fb ff       	call   0xfffffffffffbb2b2
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   47.944522] RSP: 0018:ff593db840467cc8 EFLAGS: 00010286
[   47.944588] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.944668] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1e0b8cc1cf1200
[   47.944747] RBP: 0000000000000000 R08: ff1e0b8cc33c1910 R09: ff1e0b8cc2dcc02c
[   47.944824] R10: ff1e0b8cc31d1118 R11: fefefefefefefeff R12: 0000000000000000
[   47.944904] R13: 0000000000000010 R14: ff1e0b8cc31d1000 R15: ff1e0b8cc1cf1200
[   47.944989] FS:  00007fa4a5fa3740(0000) GS:ff1e0b8d49196000(0000) knlGS:0000000000000000
[   47.945070] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.945144] CR2: 000055583a171008 CR3: 00000000018e6006 CR4: 0000000000771ef0
[   47.945225] PKRU: 55555554
[   47.945275] Call Trace:
[   47.945326]  <TASK>
[   47.945378]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.945453]  register_netdevice (net/core/dev.c:11488)
[   47.945513]  register_netdev (net/core/dev.c:11552)
[   47.945573]  loopback_net_init (drivers/net/loopback.c:218)
[   47.945634]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[   47.945702]  ops_init (net/core/net_namespace.c:137)
[   47.945763]  setup_net (net/core/net_namespace.c:446)
[   47.945823]  copy_net_ns (net/core/net_namespace.c:579)
[   47.945884]  create_new_namespaces (kernel/nsproxy.c:132)
[   47.945952]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   47.946020]  ksys_unshare (kernel/fork.c:3243)
[   47.946081]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   47.946141]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   47.946201]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.946267] RIP: 0033:0x7fa4a609ebcb
[   47.946328] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   47.946479] RSP: 002b:00007fff9aa4ed68 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   47.946560] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa4a609ebcb
[   47.946639] RDX: 0000000000000000 RSI: 00007fff9aa4ead0 RDI: 0000000040000000
[   47.946720] RBP: 00007fff9aa4f0f0 R08: 00007fff9aa4ecc0 R09: 0000000000000000
[   47.946801] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   47.946882] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000555806aa1b68
| [   47.947734] ------------[ cut here ]------------
| [   47.947824] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/204
| [   47.947917] Modules linked in:
| [   47.948077] Tainted: [W]=WARN
[   47.948135] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.948209] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.948277] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 76 b2 fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 76 b2 fb ff       	call   0xfffffffffffbb2b2
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   47.948434] RSP: 0018:ff593db840467d68 EFLAGS: 00010286
[   47.948503] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.948585] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1e0b8cc1cf1200
[   47.948667] RBP: 0000000000000000 R08: ff1e0b8cc48a7ad0 R09: ff1e0b8cc4bd2030
[   47.948748] R10: ff1e0b8cc4884118 R11: fefefefefefefeff R12: 0000000000000000
[   47.948829] R13: 0000000000000010 R14: ff1e0b8cc4884000 R15: ff1e0b8cc1cf1200
[   47.948915] FS:  000000000f36d400(0000) GS:ff1e0b8d49196000(0000) knlGS:0000000000000000
[   47.948997] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.949069] CR2: 00007fc4c2cdb000 CR3: 0000000003058001 CR4: 0000000000771ef0
[   47.949151] PKRU: 55555554
[   47.949202] Call Trace:
[   47.949253]  <TASK>
[   47.949304]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.949364]  register_netdevice (net/core/dev.c:11488)
[   47.949437]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[   47.949498]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[   47.949558]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   47.949632]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   47.949709]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.949776] RIP: 0033:0x47cc8d
[   47.949835] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   47.949973] RSP: 002b:00007ffd7c31ace0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   47.950056] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   47.950136] RDX: 00007ffd7c31ad60 RSI: 00000000400454ca RDI: 0000000000000005
[   47.950216] RBP: 00007ffd7c31ad30 R08: 0000000000000000 R09: 0000000000000000
[   47.950296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd7c31b238
[   47.950376] R13: 00007ffd7c31b2b8 R14: 0000000000000002 R15: 0000000000543540
| [   47.950605] ------------[ cut here ]------------
| [   47.950670] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/204
| [   47.950761] Modules linked in:
| [   47.950916] Tainted: [W]=WARN
[   47.950973] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.951048] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.951115] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 76 b2 fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 76 b2 fb ff       	call   0xfffffffffffbb2b2
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   47.951249] RSP: 0018:ff593db840467d60 EFLAGS: 00010286
[   47.951315] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   47.951404] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1e0b8cc1cf1200
[   47.951492] RBP: 0000000000000002 R08: ff1e0b8cc48a7ad0 R09: ff1e0b8cc4bd2030
[   47.951573] R10: ff1e0b8cc4884118 R11: fefefefefefefeff R12: 0000000000000000
[   47.951653] R13: 0000000000000010 R14: ff1e0b8cc4884000 R15: ff1e0b8cc1cf1200
[   47.951740] FS:  000000000f36d400(0000) GS:ff1e0b8d49196000(0000) knlGS:0000000000000000
[   47.951822] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.951897] CR2: 00007fc4c2cdb000 CR3: 0000000003058001 CR4: 0000000000771ef0
[   47.951979] PKRU: 55555554
[   47.952030] Call Trace:
[   47.952081]  <TASK>
[   47.952133]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   47.952192]  notifier_call_chain (kernel/notifier.c:85)
[   47.952253]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[   47.952320]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[   47.952383]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[   47.952461]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   47.952522]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   47.952582]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.952649] RIP: 0033:0x47cc8d
[   47.952709] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   47.952849] RSP: 002b:00007ffd7c31ad20 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   47.952931] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   47.953012] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[   47.953094] RBP: 00007ffd7c31ad70 R08: 0000000000000005 R09: 0000000000001ff0
[   47.953175] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffd7c31b238
[   47.953256] R13: 00007ffd7c31b2b8 R14: 0000000000000002 R15: 0000000000543540
| [   47.953526] ------------[ cut here ]------------
| [   47.953590] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/204
| [   47.953681] Modules linked in:
| [   47.953839] Tainted: [W]=WARN
[   47.953896] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.953967] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.954035] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 76 b2 fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 76 b2 fb ff       	call   0xfffffffffffbb2b2
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   47.954172] RSP: 0018:ff593db840467c10 EFLAGS: 00010286
[   47.954238] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   47.954316] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1e0b8cc1cf1200
[   47.954404] RBP: 0000000000000000 R08: ff1e0b8cc48a7ad0 R09: ff1e0b8cc4bd1030
[   47.954489] R10: ff1e0b8cc4884118 R11: fefefefefefefeff R12: 0000000000000000
[   47.954569] R13: 0000000000000010 R14: ff1e0b8cc4884000 R15: ff1e0b8cc1cf1200
[   47.954652] FS:  000000000f36d400(0000) GS:ff1e0b8d49196000(0000) knlGS:0000000000000000
[   47.954733] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.954807] CR2: 00007fc4c2cdb000 CR3: 0000000003058001 CR4: 0000000000771ef0
[   47.954887] PKRU: 55555554
[   47.954938] Call Trace:
[   47.954989]  <TASK>
[   47.955040]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.955100]  __dev_notify_flags (net/core/dev.c:9787)
[   47.955161]  netif_change_flags (net/core/dev.c:9820)
[   47.955221]  dev_change_flags (net/core/dev_api.c:68)
[   47.955280]  devinet_ioctl (net/ipv4/devinet.c:1199)
[   47.955342]  inet_ioctl (net/ipv4/af_inet.c:1011)
[   47.955410]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[   47.955475]  sock_do_ioctl (net/socket.c:1313)
[   47.955537]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   47.955597]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   47.955657]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.955722] RIP: 0033:0x47cc8d
[   47.955784] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   47.955920] RSP: 002b:00007ffd7c31ad00 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   47.956001] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   47.956081] RDX: 00007ffd7c31ad70 RSI: 0000000000008914 RDI: 0000000000000006
[   47.956160] RBP: 00007ffd7c31ad50 R08: 0000000000000005 R09: 0000000000001ff0
[   47.956240] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffd7c31b238
[   47.956320] R13: 00007ffd7c31b2b8 R14: 0000000000000002 R15: 0000000000543540
| [   92.928243] ------------[ cut here ]------------
| [   92.928347] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/204
| [   92.928481] Modules linked in:
| [   92.928672] Tainted: [W]=WARN
[   92.928731] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.928818] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.928885] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 76 b2 fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 76 b2 fb ff       	call   0xfffffffffffbb2b2
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.929024] RSP: 0018:ff593db840467b58 EFLAGS: 00010286
[   92.929090] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   92.929174] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1e0b8cc320a500
[   92.929258] RBP: 0000000000000000 R08: ff1e0b8cc48a7ad0 R09: ff1e0b8cc4bd1030
[   92.929340] R10: ff1e0b8cc4884118 R11: fefefefefefefeff R12: 0000000000000000
[   92.929601] R13: 0000000000000010 R14: ff1e0b8cc4884000 R15: ff1e0b8cc320a500
[   92.929693] FS:  0000000000000000(0000) GS:ff1e0b8d49196000(0000) knlGS:0000000000000000
[   92.929780] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.929858] CR2: 00007fc4c2cdb000 CR3: 000000002ca42002 CR4: 0000000000771ef0
[   92.929942] PKRU: 55555554
[   92.929993] Call Trace:
[   92.930045]  <TASK>
[   92.930097]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   92.930157]  netif_close_many (net/core/dev.c:1804)
[   92.930217]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   92.930285]  ? __queue_work (kernel/workqueue.c:2401)
[   92.930347]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   92.930423]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   92.930491]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   92.930550]  __fput (fs/file_table.c:510)
[   92.930612]  task_work_run (kernel/task_work.c:233)
[   92.930672]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   92.930733]  do_group_exit (kernel/exit.c:1119)
[   92.930803]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   92.930864]  get_signal (kernel/signal.c:3037)
[   92.930926]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   92.930994]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   92.931063]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   92.931126]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   92.931193] RIP: 0033:0x4c2d9e
[   92.931252] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   92.931323] RSP: 002b:00007ffd7c31a690 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   92.931413] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   92.931492] RDX: 0000000000000014 RSI: 00007ffd7c31a770 RDI: 0000000000000007
[   92.931573] RBP: 00007ffd7c31a6a0 R08: 00007ffd7c31a730 R09: 000000000000000c
[   92.931653] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000f3760f0
[   92.931731] R13: 00007ffd7c31b2b8 R14: 00007ffd7c31a860 R15: 0000000000543540
| [   92.932184] ------------[ cut here ]------------
| [   92.932253] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/204
| [   92.932344] Modules linked in:
| [   92.932508] Tainted: [W]=WARN
[   92.932565] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.932638] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.932704] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 76 b2 fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 76 b2 fb ff       	call   0xfffffffffffbb2b2
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.932846] RSP: 0018:ff593db840467bc8 EFLAGS: 00010286
[   92.932912] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   92.932990] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1e0b8cc320a500
[   92.933071] RBP: 0000000000000000 R08: ff1e0b8cc48a7ad0 R09: ff1e0b8cc69c7830
[   92.933152] R10: ff1e0b8cc4884118 R11: fefefefefefefeff R12: 0000000000000000
[   92.933231] R13: 0000000000000011 R14: ff1e0b8cc4884000 R15: ff1e0b8cc320a500
[   92.933315] FS:  0000000000000000(0000) GS:ff1e0b8d49196000(0000) knlGS:0000000000000000
[   92.933584] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.933660] CR2: 00007fd5ffe83f98 CR3: 000000002ca42002 CR4: 0000000000771ef0
[   92.933743] PKRU: 55555554
[   92.933800] Call Trace:
[   92.933852]  <TASK>
[   92.933903]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   92.933970]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   92.934036]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   92.934097]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   92.934156]  __fput (fs/file_table.c:510)
[   92.934216]  task_work_run (kernel/task_work.c:233)
[   92.934276]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   92.934336]  do_group_exit (kernel/exit.c:1119)
[   92.934402]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   92.934463]  get_signal (kernel/signal.c:3037)
[   92.934524]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   92.934594]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   92.934662]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   92.934722]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   92.934797] RIP: 0033:0x4c2d9e
[   92.934857] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   92.934930] RSP: 002b:00007ffd7c31a690 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   92.935009] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   92.935088] RDX: 0000000000000014 RSI: 00007ffd7c31a770 RDI: 0000000000000007
[   92.935169] RBP: 00007ffd7c31a6a0 R08: 00007ffd7c31a730 R09: 000000000000000c
[   92.935251] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000f3760f0
[   92.935330] R13: 00007ffd7c31b2b8 R14: 00007ffd7c31a860 R15: 0000000000543540
| [   92.952479] ------------[ cut here ]------------
| [   92.952536] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 0/12
| [   92.952595] Modules linked in:
| [   92.952681] Tainted: [W]=WARN
[   92.952705] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.952743] Workqueue: netns cleanup_net
[   92.952770] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.952834] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 76 b2 fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 76 b2 fb ff       	call   0xfffffffffffbb2b2
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.952939] RSP: 0018:ff593db840067c78 EFLAGS: 00010286
[   92.952969] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   92.953010] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1e0b8cc320a700
[   92.953054] RBP: 0000000000000000 R08: ff1e0b8cc33c1910 R09: ff1e0b8cc69c402c
[   92.953090] R10: ff1e0b8cc31d1118 R11: fefefefefefefeff R12: 0000000000000000
[   92.953134] R13: 0000000000000011 R14: ff1e0b8cc31d1000 R15: ff1e0b8cc320a700
[   92.953178] FS:  0000000000000000(0000) GS:ff1e0b8d49096000(0000) knlGS:0000000000000000
[   92.953227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.953267] CR2: 00007fd5ffcde770 CR3: 000000002ca42006 CR4: 0000000000771ef0
[   92.953313] PKRU: 55555554
[   92.953328] Call Trace:
[   92.953344]  <TASK>
[   92.953358]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   92.953389]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   92.953423]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   92.953444]  cleanup_net (net/core/net_namespace.c:702)
[   92.953467]  process_one_work (kernel/workqueue.c:3314)
[   92.953496]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   92.953519]  ? rescuer_thread (kernel/workqueue.c:3672)
[   92.953540]  kthread (kernel/kthread.c:436)
[   92.953561]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   92.953583]  ret_from_fork (arch/x86/kernel/process.c:158)
[   92.953606]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))


Finger prints:
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:__dev_notify_flags:netif_change_flags:dev_change_flags
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:register_netdev:loopback_net_init
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:__tun_chr_ioctl:__x64_sys_ioctl
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:netif_close_many:unregister_netdevice_many_notify:unregister_netdevice_queue
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:unregister_netdevice_queue:__tun_detach:tun_chr_close
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:default_device_exit_batch:ops_undo_list:cleanup_net
rtmsg_ifinfo_build_skb:rtnetlink_event:notifier_call_chain:netdev_update_features:__tun_chr_ioctl